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Definition
| Evolved 3.5 billion years ago. |
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Definition
| Evolved about 2.1 billion years ago. |
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Definition
| All life today arises by the reproduction of preexisting life. |
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Definition
| Believed until 19th Century that life arises from nonliving matter. |
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Definition
| How the first organisms were "made" |
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Definition
| Can form spontaneously from abiotically produced organic compounds. |
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Definition
| Recycling carbon and other vital chemical elements back and forth between organic matter, the soil and atmosphere. |
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Definition
| Unicellular and very small. |
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Definition
| Form true colonies, show specialization of cells, and are very large. |
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Definition
| Where prokaryotes reproduce by splitting in two. |
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Definition
| Thick-coated, protective cells that are produced within the cells when they are exposed to unfavorable conditions. |
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Term
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Definition
| Obtain energy from light. |
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Definition
| Obtain energy from chemicals. |
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Definition
| Species that obtains carbon from carbon dioxide. |
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Term
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Definition
| Species that obtain carbon from at least one organic nutrient. |
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Definition
| Bacteria and other organisms that cause disease. |
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Term
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Definition
| Poisonous proteins secreted by bacterial cells. |
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Definition
| Chemical components of the outer membrane of certain bacteria. |
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Definition
| Use of organisms to remove pollutants from water, air and soil. |
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Definition
| Are eukaryotic, which evolved from prokaryotic ancestors. |
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Definition
| One species living inside another host. |
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Definition
| Protists that live primarily by ingesting food. |
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Term
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Definition
| protozoans with flagella. |
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Term
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Definition
| Temporary extension of the cell. |
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Term
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Definition
| Free-living, and use structures called cilia to move and feed. |
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Definition
| Resemble fungi in appearance and lifestyle, but aren't closely related. |
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Definition
| Exchange the carbon dioxide and oxygen with the atmosphere in plants. |
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Definition
| Transports vital material in a plant. |
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Definition
| Surface that helps the plants retain water. |
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Definition
| Transports water and minerals from roots to leaves. |
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Term
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Definition
| Distributes sugars from leaves to the roots and other non-photosynthetic parts of the plants. |
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Term
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Definition
| A jacket of protective cells surrounding a moist chamber where gametes can develop without dehydrating. |
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Term
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Definition
| Modern-day lineage of green algae. |
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Term
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Definition
| Non-vascular plants without seeds. |
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Term
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Definition
| Vascular plants without seeds. |
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Definition
| Vascular plants with seeds. |
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Term
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Definition
| Mainly cone-bearing trees. |
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Definition
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Term
| Alternation of Generations |
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Definition
| Shifting between the gametophyte and sporophyte forms. |
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Term
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Definition
| Single cell containing DNA, RNA, and a few proteins. |
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Term
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Definition
| Eukaryotes, typically multicellular, and more closely related to animals than plants. |
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